ukify: bring order of EFI sections in man + --help into same order as spec

ukify: bring order of EFI sections in man + --help into same order as spec

Previously, the order was quite chaotic, even sometimes interleaved with
entirely unrelated switches. Let's clean this up and use the same order
as in the spec.

This doesn't change anything real, but I think it's a worthy clean-up in
particular as this order is documented as the PCR measurement order of
these sections, hence there's actually a bit of relevance to always
communicate the same order everywhere.